.top{
	width:900px;
	height:90px;
	font-size:30px;
	color:#FF0;
	text-align:center;
	line-height:90px;
}

.mid{
	height:420px;
	width:780px;
	margin:auto;
}
.bottom{
	height:290px;
	background: url(../images/bg.png);
	padding:30px 40px;
}
